Well, I have a long train journey soon and won't be online for several days, but, to be honest, these multiple choice questions aren't too bad usually, as you've already discovered. Let us know how it goes, though.
I done the exam yesterday and passed with flying colours.. word of advice if you struggled with the Health and safety exam i suggest you revise as some questions come up. you also get questions about wind turbines and the different types of carbons ( Low and High carbons) and name them and energy efficiency ratings. I hope this helps a little bit
Remember you need to demonstrate to an assessor you have done the required work and it meets the standards, so there isn't a set amount of photos required, just evidence to prove what you have done